// Copyright (C) 2025 Kumo inc.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#ifndef ROTHAR_PEGTL_INTERNAL_UNWIND_GUARD_HPP
#define ROTHAR_PEGTL_INTERNAL_UNWIND_GUARD_HPP

#include "../config.hpp"

#include <optional>
#include <utility>

namespace rothar::internal
{
   template< typename Unwind >
   struct unwind_guard
   {
      explicit unwind_guard( Unwind&& unwind_impl )
         : unwind( std::move( unwind_impl ) )
      {}

      ~unwind_guard()
      {
         if( unwind ) {
            ( *unwind )();
         }
      }

      unwind_guard( const unwind_guard& ) = delete;
      unwind_guard( unwind_guard&& ) noexcept = delete;

      unwind_guard& operator=( const unwind_guard& ) = delete;
      unwind_guard& operator=( unwind_guard&& ) noexcept = delete;

      std::optional< Unwind > unwind;
   };

}  // namespace rothar::internal

#endif
